John Kim, 29, was on day four at his job at Plumtree Software when the company cofounder GlennKelman asked him to fix the firm's demonstration Web site.
"We're writing a record number of offers, but we're not seeing a record number of closings and that's because it's so competitive, " said GlennKelman, chief executive of real-estate brokerage Redfin Corp. in Seattle with offices in 14 states.